I think my only relatively unpopular opinion is that I genuinely like Fairy Tail quite a lot. It's certainly not without its flaws, but it never ceases to amaze me how much and often it gets dunked on in the general anime/manga community. Always feels like there's the group that strongly likes it, the larger group that strongly hates it, and very little in-between.
It ticked all of my boxes though: cool world, liked the vast majority of the cast (heroes and villains inclusive), fun fights that didn't overstay their welcome, jammin' OST. Masterful writing? Nah. But aside from one of the filler arcs and the ending arc being kinda mediocre, it managed to hold interest and hype the whole way through so it was a win in my book Haven't yet checked out the 100 Year Quest sequel manga, might someday or if it gets animated.